【摘要】 目的探讨64层螺旋CT评价老年性骨质疏松腰椎骨质结构改变的临床应用价值。方法回顾性分析了20例经双能量X线骨密度仪确诊为老年性骨量减少患者(A组,Tscore值在-1～-2.5之间)及20例骨质疏松患者(B组,Tscore值在-2.5以下)的X光平片及多层螺旋CT检查结果。结果CT直接扫描的横断图像结合多平面重组(MPR)图像对骨质疏松的诊断与双能量X线骨密度仪测量结果呈负相关,且B组相关性高于A组。CT直接扫描的横断图像结合MPR图像对骨质疏松骨质结构改变诊断与X线CR平片对骨质疏松的诊断存在差异,CT直接扫描的横断图像结合MPR图像对骨质疏松的诊断更敏感、更优越。结论64层螺旋CT对骨质疏松的诊断优于X线平片,利用MPR及三维重建技术不仅可以早期诊断骨质疏松,而且可以全面观察骨骼的大体结构改变。更多还原

【Abstract】 Objective To explore the clinical value of 64-slice spiral CT for spinal structure assessment in elderly patients with osteoporosis.Methods The computed radiography (CR) films and 64-slice spiral CT isotropic scanning images of 40 patients who had been diagnosed as osteoporosis by dual-energy X-ray absorptiometry (DXA) were retrospectively analyzed. The patients were divided into two groups according to their T-scores by DXA:group A (T-score was -1.0 --2.5); and B group (T-score was below -2.5). Results The diagnostic results of axial CT images combined with multi-planar reconstruction (MPR) was negatively correlated with the measurement results of DXA in the diagnosis of spinal osteoporosis,and such correlation was higher in group B than in group A. Compared with CR films,axial CT images combining with MPR showed superior effectiveness in the diagnosis of osteoporosis. Conclusions 64-slice spiral CT is better than CR in diagnosis of osteoporosis. CT-MPR and 3D reconstruction not only can be used to diagnose osteoporosis early,but also to observe the changes of skeleton’s shape and overall structure.更多还原